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A group of 55 pupils were asked if they owned a phone or a tablet.11 people are known to own both18 said they only owned a tablet34 said they owned at least a phoneA student is picked a random, what is the probability that the student doesn’t have a phone

18/55

UH
Answered by Umer H. Maths tutor
3538 Views

What are logarithms?

Logarithms allow us to calculate and manipulate indices in relation to regular numbers. The key thing to remember is that "logxy" begs the question "wh...

AM
Answered by Alex M. Maths tutor
3183 Views

When will I ever need to use this in real life?

Maths is something you can make use of for the rest of your life.Obviously, there are a vast number of jobs out there, such as engineering, which use mathematics everyday so if that's the sort of thing th...

AM
Answered by Alex M. Maths tutor
3308 Views

How do I solve the simultaneous equations 5x+2y=11 and 4x-3y=18?

Simultaneous equations have two or more unknown values, in this case there are two: x and y. To solve them, first we need to get one unknown by itself. In order to do this we need the coefficient of eithe...

HT
Answered by Helen T. Maths tutor
7005 Views

Find the derivative of the equation y = x*ln(x)

y = x*ln(x)Let u = x, v = ln(x) => du/dx = 1, dv/dx = 1/x=> y = uv=> dy/dx = (du/dx)v + u(dv/dx) USING PRODUCT RULETherefore y = ln(x) + 1

OB
Answered by Owen B. Maths tutor
4526 Views

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